Patent US3604831A successfully refreshed from Google Patents.
US3604831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluted core
Assignee: Individual
•
Filing: 1969-10-21
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Granted: 1971-09-14
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Expires: 1989-10-21
Abstract
Abstract A high-current-carrying, flexible electric cable has a central hollow core having longitudinal flutes along its exterior, conductors surrounding the core, and sheathing encasing the conductors. The core has an internal restriction adjacent to each end which permits limited flow of liquid through its hollow interior and has a perforated portion adjacent thereto toward each end of the conductor in order that liquid introduced into the core will be forced through the perforations into the interstices between the conductors and a limited portion passes through the interior of the core.
Inventors
- 👤 Daniel J Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:45
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/06; H01B9/0611; H01B7/00; H01B7/17; H01B7/29; H01B9/001
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
149 words
A flexible, liquid-cooled electric cable comprising a cylindrical core member of flexible, relatively stiff insulating material having a central bore, a portion of said core member which is spaced from each end thereof having a plurality of radially disposed perforations, means in the bore restricting passage therethrough, said means located adjacent to and inwardly of the portion which has perforations, the exterior of said core having a plurality of substantially uniformly spaced longitudinal grooves extending substantially the entire length thereof, said grooves providing communication between the two groups of radially disposed perforations, a plurality of conductors extending substantially longitudinally along the exterior of said core member, each conductor formed of a bundle of wire strands, a perforated sleeve surrounding each bundle and extending longitudinally of the cable, sheathinG means enclosing said conductors, and terminal means at each end of said core member engaging said conductors and said sheathing means.
Claim 2
Dependent Claim
149 words
A flexible, liquid-cooled electric cable comprising a cylindrical core member of flexible, relatively stiff insulating material having a central bore, a portion of said core member which is spaced from each end thereof having a plurality of radially disposed perforations, means in the bore restricting passage therethrough, said means located adjacent to and inwardly of the portion which has perforations, the exterior of said core having a plurality of substantially uniformly spaced longitudinal grooves extending substantially the entire length thereof, said grooves providing communication between the two groups of radially disposed perforations, a plurality of conductors extending substantially longitudinally along the exterior of said core member, each conductor formed of a bundle of wire strands, a perforated sleeve surrounding each bundle and extending longitudinally of the cable, sheathinG means enclosing said conductors, and terminal means at each end of said core member engaging said conductors and said sheathing means.
Claim 3
Dependent Claim
27 words
The invention as defined in claim 1 and a riser tube snugly received within each outer end of said core member and engaging its respective terminal means.
Claim 4
Dependent Claim
27 words
The invention as defined in claim 1 in which said terminal means has a corrugated end portion for promoting interengagement with the interior of said sheathing means.
Claim 5
Dependent Claim
21 words
The invention as defined in claim 3 and strap means encircling said sheathing means for securing it to said terminal means.
Claim 6
Dependent Claim
23 words
The invention as defined in claim 1 in which the cross-sectional area of the bore is substantially larger than that of a conductor.
Claim 7
Dependent Claim
15 words
The invention of claim 1 in which said core member is formed of rubberlike material.
Claim 8
Dependent Claim
16 words
The invention of claim 1 in which said sheathing means is a cylinder of rubberlike material.
Claim 9
Dependent Claim
46 words
A flexible, liquid-cooled electric cable as set forth in claim 1 where each of the means located in the central bore for restricting passage therethrough is a plug disposed transversely of said bore, each plug having a substantially centrally located orifice of reduced size extending therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |